Hi, I'm looking for a bit of advice please- I've had my fiesta from new and I love it, however the last 2 tanks of fuel are going a lot quicker than any I've had before. I haven't changed style of driving (if anything I've been extra careful with acceleration and braking since I saw the fuel needle dropping faster) - but I am at a loss as to what's happened, it's getting quite bad (about 300 miles to a tank). My daily commute is about 20 miles, mostly motorway. Does anyone have any ideas- is it definitely something I am doing, or do I need to try some of that stuff you put in the fuel tank to clean it maybe? I normally fill up at sainsburys but the last 2 tanks have been from BP and Total. Any suggestions gratefully received! It's a 1.3 Zetec diesel. Thanks